import java.util.Scanner;

public class Demo5 {
    public static void main(String[]args) {
        Scanner sc = new Scanner(System.in);
    System.out.println("请输入今天是星期几");
    String day = sc.next();
    switch(day) {
        case "周一":
            System.out.println("鸡蛋");
            break;
        case "周二":
            System.out.println("鱼");
            break;
        case "周三":
            System.out.println("青菜");
            break;
        case "周四":
            System.out.println("牛肉");
            break;
        case "周五":
            System.out.println("虾");
            break;
        case "周六":
            System.out.println("汉堡");
            break;
        case "周天":
            System.out.println("鸡翅");
            break;
        default:
            System.out.println("请输入正确的星期");
            break;
        }
    }
}